This book - published for the first time in 1939 at Allahabad - is a systematically condensed summary of the author's Readership Lectures 1936/37 at Patna University. Based on his investigations from 1924 to 1928 in Pali-Abhidhamma and specially on his studies in the Abhidhammattha-Sangaha, this book furnishes the reader with an introduction in the early Buddhist concept of consciousness, being the foundation of Buddhist meditational approach as well as of the ...